After just over a year my SDV6 is managing to return 28.7mpg (9.8 L/100km) – that's 21,840 miles using 3,460 litres (761 gallons) – used mainly in the country and on motorways with very little urban (and a fair amount of time, though obviously little mileage, off road).

Best tankful was 33.2mpg – 530 miles of heavy but free-flowing motorway almost entirely in adaptive cruise – and worst 25.3mpg. Only other things I've noticed are that premium diesel seems to make no difference whatsoever (my local filling station is often out of regular so it's been used about one tank in six) and the trip mpg is way out – that best tankful showed 37.3mpg, the worst 28.5mpg – it's always 3.5–4.5mpg too optimistic on a tank.

As I measure at every fill-up and don't trust the trip it's difficult to work out individual journeys but my best single run showed 44mpg on the computer. Problem is I just don't believe it...

Fascinated to hear if anyone's doing any better.

I have a totally invalid and useless to RRS owners comparison with my X6.

27.6 mpg (10.2 L/100km), all city and inner suburb driving, using tank fills not computer. Average speed is 23.9 mph (37.4 km/h) using computer.

Useless but interesting (well I think so anyway!) Gone - 2008 Stornoway Grey RRS 2.7 TDV6
Gone - 2009 Buckingham Blue RRS 2.7 TDV6
Gone - 2010 Alaska White RRS 5.0 V8 Aspirated
Gone - 2017 Chawton White RRS 5.0 V8 Supercharged
Current - 2010 Java Black RRS 5.0 V8 Aspirated
Current- 2024 RRS P400 SE Dynamic

Humbug wrote:

After just over a year my SDV6 is managing to return 28.7mpg (9.8 L/100km) – that's 21,840 miles using 3,460 litres (761 gallons) – used mainly in the country and on motorways with very little urban (and a fair amount of time, though obviously little mileage, off road).

Best tankful was 33.2mpg – 530 miles of heavy but free-flowing motorway almost entirely in adaptive cruise – and worst 25.3mpg. Only other things I've noticed are that premium diesel seems to make no difference whatsoever (my local filling station is often out of regular so it's been used about one tank in six) and the trip mpg is way out – that best tankful showed 37.3mpg, the worst 28.5mpg – it's always 3.5–4.5mpg too optimistic on a tank.

As I measure at every fill-up and don't trust the trip it's difficult to work out individual journeys but my best single run showed 44mpg on the computer. Problem is I just don't believe it...

Fascinated to hear if anyone's doing any better.

New-style HSE

First 5000km averaged just under 8.0l/100km (mixed town and country) with best of 7.1l/100km on a 300km trip on open road. Talking to dealer today and he reckons it could well improve as engine beds in completely from around 8000km. We shall see !! Rod SDV6 (14.5) Corris Grey NZ Spec + door mouldings, mud flaps and tow bar
Also Audi A1 Sport + - (wife's rocket) and 1985 BMW 628 CSI

I get around 36mg after 7500 miles. Impressed, my Freelander only got 33 at a push! Arrived: MY16 A/B SDV6 in Aruba, Ivory interior, piano black trim, black panoramic roof, spare wheel, blind spot monitoring, mudlaps and more...

Gone but not forgotten:
2014 RRS2 SDV6 HSE in Loire Blue
2011 Freelander 2 SD4 HSE in Santorini Black

Not got a clue... never look.....

Just filled up though..... What with the Euro and petrol prices dropping...

70 Litres just cost me £45... Happy days  2014.5 SDV6 AB Dynamic ... Fuji /Santorini Pan roof and 22's
2013 Porsche Boxster S 3.4
2014 Audi A3 S line Quattro
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When I checked mpg the computer was reading 13% optimistic so I changed it from +10 to -3 using a IId tool and it was accurate to my actual fuel used. Mpg over six thousand miles was 29.12 mpg on an old style 2013 hse black SDV6

Various threads on this, Maybe as you've figured, the fuel computer on SDv6 is at best optimistic and best ignored unless you're looking for a warm fuzzy feeling of comfort as to the MPG your achieving.

All round driving, for me, it's showing 28.8 MPG, poppycock! petrol receipts and a calculator show between 25 and 26 all-round with 31 on a run.

Happy Driving!

J

Edit oops, you're one of the newer ones - sorry..  Gone - MY12 SDV6, Orkney Grey, Ivory interior, Privacy Glass

Reality Check ! Just returned from a 3100km trip around NZ's North Island. Complete variety of roads - city, motorway, main highway, country, and gravelled mountain goat tracks. Speedo reads 7.2litres/100km but fill to fill calculates at 8.9 litres/100km. Now that's brought me back to earth ! Still way better than previous 2006 2.7l and what a fabulous vehicle to go touring in. R SDV6 (14.5) Corris Grey NZ Spec + door mouldings, mud flaps and tow bar
Also Audi A1 Sport + - (wife's rocket) and 1985 BMW 628 CSI

Just done a trip down to Poole, so I pulled up the journey details via the incontrol and was wondering how much mpg should I take off this reading as I know it's a bit optimistic, I did try and drive like an old man on the way down just to see what I could do, to the first services anyway, after that felt the urge to drive with a bit more vigor. 2015 HSE SDV6 Scotia Grey, ebony / lunar, colour coded, deployable steps, TV, sliding pano and a few other bits. Now gone
2018 Velar R-Dynamic HSE sdv6 silicon silver

Can anyone guess on what it says I got
Journey of just under 81 miles, mostly motorway with a good few miles in an average speed 50 zone 2015 HSE SDV6 Scotia Grey, ebony / lunar, colour coded, deployable steps, TV, sliding pano and a few other bits. Now gone
2018 Velar R-Dynamic HSE sdv6 silicon silver

36.2 mpg my guesstimate !

Remember I was driving with a very light right foot, and I was under the speed limit, most of the time 2015 HSE SDV6 Scotia Grey, ebony / lunar, colour coded, deployable steps, TV, sliding pano and a few other bits. Now gone
2018 Velar R-Dynamic HSE sdv6 silicon silver

I had allowed for that!

Best I've ever had (according to the display) was 32.5 mpg tootling around France last summer. But I'm on 22" wheels which poss doesn't help. I'm not going higher than 36.7 mpg